Enable `clippy::vec_init_then_push` (#8771)

This PR enables the
[`clippy::vec_init_then_push`](https://rust-lang.github.io/rust-clippy/master/index.html#/vec_init_then_push)
rule and fixes the outstanding violations.

Release Notes:

- N/A
83f6a1ea49Marshall Bowers committed on 3/3/2024, 3:53:23 PM· committed by GitHubparent6685d3a
3 files changedLine totals unavailable